Polarized Raman Study of Single-Wall Semiconducting Carbon Nanotubes

作者：Ado Jório, G. Dresselhaus, M. S. Dresselhaus, M. F. A. de Souza, M. S. S. Dantas, Marcos Assunção Pimenta, Apparao M. Rao, Riichiro Saito, C. Liu, Hui–Ming Cheng · 发表于：Physical Review Letters · 年份：2000 · DOI：10.1103/physrevlett.85.2617 · 被引用次数：231 · 研究领域：Carbon Nanotubes in Composites、Graphene research and applications、Semiconductor materials and interfaces

Polarized Raman spectra were obtained from a rope of aligned semiconducting single-wall nanotubes (SWNTs) in the vicinity of the $D$ band and the $G$ band. Based on group theory analysis and related theoretical predictions, the $G$-band profile was deconvolved into four intrinsic SWNT components with the following symmetry assignments: $1549{\mathrm{cm}}^{\ensuremath{-}1}$ $[{E}_{2}({E}_{2g})]$, $1567{\mathrm{cm}}^{\ensuremath{-}1}$ $[A({A}_{1g}){+E}_{1}({E}_{1g})]$, $1590{\mathrm{cm}}^{\ensuremath{-}1}$ $[A({A}_{1g}){+E}_{1}({E}_{1g})]$ and $1607{\mathrm{cm}}^{\ensuremath{-}1}$ $[{E}_{2}({E}_{2g})]$. The frequency shifts of the tangential $G$ modes from the $2D$ graphitelike ${E}_{{2g}_{2}}$ frequency are discussed in terms of the nanotube geometry.